diff --git a/packages/components/src/panel/style.scss b/packages/components/src/panel/style.scss
index 890a72c6add48..500e5e6fd1a79 100644
--- a/packages/components/src/panel/style.scss
+++ b/packages/components/src/panel/style.scss
@@ -35,9 +35,12 @@
 	justify-content: space-between;
 	align-items: center;
 	padding: 0 $grid-unit-20;
-	height: $grid-unit-60;
 	border-bottom: $border-width solid $gray-300;
 
+	// This helps ensure the correct panel height, including the border, avoiding subpixel rounding issues.
+	box-sizing: content-box;
+	height: $grid-unit-60 - $border-width;
+
 	h2 {
 		margin: 0;
 		font-size: inherit;